Wavelength calibration of x-ray imaging crystal spectrometer on Joint Texas Experimental Tokamak

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4891058· OSTI ID:22308947

Yan, W.; Jin, W.; Huang, D. W.; Ding, Y. H.; Li, J. C.; Zhang, X. Q.; Zhuang, G. ^[1]; Lee, S. G.; Shi, Y. J. ^[2]

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1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan (China)
2. National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)

The wavelength calibration of x-ray imaging crystal spectrometer is a key issue for the measurements of plasma rotation. For the lack of available standard radiation source near 3.95 Å and there is no other diagnostics to measure the core rotation for inter-calibration, an indirect method by using tokamak plasma itself has been applied on joint Texas experimental tokamak. It is found that the core toroidal rotation velocity is not zero during locked mode phase. This is consistent with the observation of small oscillations on soft x-ray signals and electron cyclotron emission during locked-mode phase.

• OSTI ID: 22308947
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CALIBRATION
CRYSTALS
ELECTRON CYCLOTRON-RESONANCE
EMISSION
MODE LOCKING
OSCILLATIONS
PLASMA
RADIAL VELOCITY
RADIATION SOURCES
ROTATION
SOFT X RADIATION
TEXT DEVICES
WAVELENGTHS
X-RAY SPECTROMETERS